You've got to be joking
When I was at our local Tesla store three weeks ago, I specifically asked about these rumored "showroom discounts", especially as their invitation stated that they wanted to present their current showroom offerings at a discount. The discounts on showroom cars were between 1K and 5K, even for older cars. Nowhere near five digit discounts and nothing particularly interesting. The store manager said with conviction that Tesla doesn't do discounts like that, clearly indicating that whoever says they are must be lying.
Now I don't say I don't believe you. But at least on this side of the pond, discounts of such proportions are unheard of.